Bench-vise



ATENT Ormeso W'ILFORD C. TOLES, OF CHICAGO, ILLINOIS.

BENCH-VISE;

SPECIFICATION forming part of Letters Patent No. i 613,535, dated November 1, 1898.

4Application filed December 3,1896. Renewed October 7, 1898. Serial No. 692,904. (No model.)

fo all whom it may concern:

Be it known that I, WILFORD C. ToLEs, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Bench-Vises, of which the following is a full and clear description, reference being had to the accompanying drawings, in which-- Figure l is a plan view. Fig. 2 is a sectional elevation on the line 2 2 of Fig. l. Fig. 3 is an enlarged vertical cross-section. Fig. 4 is a plan view showing the mutilated nut in detail with the cap G removed, and Fig. 5 is a perspective view of the bench-stop.

My invention pertains to that class of benchvises known as rapid-'acting vises, and more particularly to the kind shown, described, and claimed in the patent granted to myself and IV. II. Toles on the 30th day of October, 1894, and bearing the number 528,190; and it consists in certain improvements and additions to the tool shown in the abovementioned pat-ent, as will be hereinafter explained.

In the drawings, A is the bed-piece, secured to the bench or work-table by set-screws a and a from beneath the bench and screws a2 and as from the side. The bed-piece has a vertical liange A', which forms the stationary jaw of the vise, adapted to be set into the bench so that its face is flush with the front edge of the bench and has conveniently near the center of its width an inward projection A2, that should be set snugly into an indentation in the bench. These means forsecuring the bedpiece to the bench render it permanently immovable therefrom, the inward projection being calculated to resist the strains put -upon it and its various fastenings while in service. j

Downwardly-projecting lugs co4 a4 c4 d4 on the bed-piece A afford supports in which the parallel bars B and B may slide. These bars are secured to and form the support for the moving jaw C, which has bosses c and c', into which the ends of the bars are secured by being turned down so as to present a shoulder, against which the said jaw C is held by nuts b and b', screwed into the ends of the said bars. The inner ends. are connected by a yoke b2, so that their parallelism may be preserved. The screw D is rotatably mounted in the moving jaw C and in the yoke b2 and has the handle E secured to its outer end. The screw D h'as a groove out along the entire length of the thread D of a convenient width, which groove forms a mutilation of each convolution of the threads. A nut-segment F lies loosely in a recess fin the bed-piece and is adapted to be engaged by the threads of the screw D.

The handle E has a projection e as one part therewith, and on the boss c2 of the jaw C is another projection c3, against which the projection e strikes. The projection c3 is continued in the form of a rib extending to the top of the jaw C, forming a tie-piece between the jaw and boss c2 and serving to stiften the jaw Cto resist the natural strains put upon it. When the handle E strikes with its projection c the projection c3, the groove d in the screw D is opposite the nut-segment F, so that the jaw C may be slid to or from the stationary vise, as may be desired, or until the jaws approximate the width of the part to be held. The screw is then turned into engagement with the segment-nut to securely grip the part to be held. In order that the engagement of the screw and the segmentnut may be possible no matter what the relative positions of the two parts may be in re= gard to the threads, the nut is adapted to move circumferentially and longitudinally, as will be explained.- Its outer edge is beveled, as at f', and the recess has a correspondingly-beveled wall f2, against which the beveled end of the nut is forced by the spring f3 between it and the inner wall f4 of the recess f. The spring is preferably a coiled spring, within which a button-headed pin f5 lies, its head resting against the wall f4. The spring and pin lie partiallyinclosed in a hole formed in the nut F, as shown in Fig. 2. At the operation of clamping the threads of the screw will be seldom opposite the spaces between the threads on the nut. The rotary movement of the said screw will tend to rotate the segment-nut and the beveled end ofthe said nut working against the beveled wall of the recess, which rotary movement will result in a longitudinal movement of the nut until it is in the position to be engaged by the screw. The nut is then forced outwardly against the beveled wall and the jaws and by a slight additional movement of the screw will clamp ICO the part. The spring is for the purpose of keeping the nut in its outward position.

A casing G serves to protect the nut and its parts from dirt and has a raised edge g, that forms a stop for and determines the circumferential position of the nut relative to the screw in order that when the projections e and o3 are in contact the movable jaW may be slid. I further utilize the inward projection on the stationary jaw by inserting in a hole formed in it a bench-stop Il, which is in the place where it :is needed and is also out of the Way of the Workman when not required. The stop has a spring`N to raise it in order that it may be gripped by the hand when set free by the loosening of the setscrew N. The face of the stop may be reticulated, as shown.

Tha-t I claim as my invention, and desire to secure by Letters Patent, is-

l. In a bench-vise, the combination with the bed-piece having the stationary jaw risinfor therefrom, the said jaw adapted to be recessed into the bench and secured thereto, a projection on said stationary jaw adapted to take the strain ott the securing-bolts of said bed-piece, and a .bench-stop adapted to be supported in said projection, substantially as described.

2. In a bench-vise, the combination with the stationary jaw adapted to be let into the face of the bench, an inward projection on said jaw adapted to take the strains ott the securements of said jaw, and a bench-stop supported in said projection, substantially as described.

3. The combination of the jaw A', the inward projection A2, and the bench-stop Il, having' the set-screw N and the spring N, substantially as described.

WILFORD C. TOLES.

Vitnesses:

WALTER H. SMITH, FRANCIS J. Cosi-UNG. 

